Door-lock



w. LOUGHEED DOOR LOCK.

APPLICATION FILED AUG-11, 1919.

. PatentedSept. 14, 1920.

' 2 SHEETS-SHEET 1- w. LOUGHEED.

DOOR LOCK.

APPLICATIONFILED AUG- 11, 1919.

Patented Sept. 14, 1920.

2 SHEETS-SHEET 2- Mot/MA UNITED sTATs WELLINGTON LOUGHEED,OExWYAliDOlTE. i/rionieAnjnssieivoa N LF at JACOB B. SPARKELOE ROYALOAK, .IlIIQI-IIGAN Z i noon-LOCK.

To all whom it may concern Be it known that I, \VELLINGTO'N Loner} v11in), a citizen of the United States, residing Vyandotte, county fflvState declare the following to bea' full,- clear and exact descriptionof the same, suchas will enable others skilled "in the art to which'itpertains to make and use tl1esarne,[reference being had to theaccompanying drawings, \vh1ch form a part of'thi's specification v Thisinvention relates to door latches, and

. an object thereof is to provide a door latch operation of the latchmember by either V I 9 23 tends to hold the locking barin theg-posi tionshown jinfFig. 2 with thearrns' 21 and H p 1.

mally adapted to beretracted by the door knob on the inside of the doorand pre-f vented from operation by 'the knob. on the exterior of thedoor. A further object of the invention isto provide a lock or latch ofthe character stated with means for set-' ting the mechanism whereby thelatch j be freelyoperated by either knob. An adj-f ditional objectofth'e' invention is to pro vide a latch ofthe character statedwithmeans for holding the latch from operation by the exterior'knob'and aspring-projected member capable of being set-to hold the' "latch lockingmember out of engagement; with-the latch or to permit its engagementtherewith. A further feature of the invenjtion is involved in themechanism" for autoy matically releasing the lockingmeinber from-jtheflat'ch "by the turning of 1 ,01? the knobs."

These and OthBI Obj BCiIS magma several novel' features' of theinventionarehereinafter more fully described and .claimed and' thepreferred form of constructioniinvolving the invention is shown in theaccomg.

.1 j and' 16 and lying infthe'se recesses'jis lockingjbarf l7extending;laterally-f the "casef Thisjlocking'bar li 'i's{guided 1 ybearingJlfi- Qa S'shOWII in Fig. 2 ',and lugs 19 and" 201 and onopposite sides: thereoff between-which thelocking bar-17 is'recip ro-f Icable "Thelocking'bar' fl is provided with I panyingfdrawings in whichf+I Figure 1 is a 'view 'of ithe outside of the: lockcase; 1 1

Fig. 2 is a View anism.. v Fig. 3 is a similar View showing the pesttion assumed by the parts on turnin -the interior doorknob.

Fig. 4 is a similar viewshowing thelocking'member retained in position"to permit door knob;

, of the ase witlithe-eovef "removed showing the latch lockingifmechj-Application filed August 11, 191 9.. sria1 in). 316,712

' Specification ofLetters rateiitli li gfgnt s 'pfl" "Fig.3: is'asectiontakenfthrough the latch i case ojn'line 6-6 of Fig.3 showing thetwo] door knobs and part of the latching bolt.

Fig. 7 isia perspective View offlthe latch j V r I F g. 8 isa'pe'rspective view'of the latch lock ngmember. I r ,7 -w

9 s a perspective viewtof the lockg locking member.

ing member operating pawl. 1 Fig.' 10 isfa detail "showingtherelationship of the locking member operating pawl:

and operating'hub of the interior door knob.-

-Fig. 11 is a detailin perspective of the v p v key foroperatingthelocking member pawl" in which the spring protracted latchbolt' may be utilized as a lockingmem'ber norfrom the exterior.

an'da latch member or bolt;.'2 having'as'la' beveled "face3 as is usualwith spring-re tracted latches.

The latch member isv normally force'd outward by a spring4 engag- 1 bersh'ownin Fig. =7, but it is to be understood that the spring maybeapplied to the latchfmember in any-desiredmannera The latch -member is;provided with'tworearwardly extending arm'sef and 6 as shown, f the ends'of wl iclrare, i'nturned providing lugs .7. and ,8 for-;eac h-.,ar'mrespectively against the inner faces] of which the' lugs I 19 and lOjofahub'llm'ay e'ngageasshown in F igs. 2 and'4lZfTheh'ub ll issecured to,asquare shaft 12Ion whichis mounte'd'the rear ends thereof whichprovides shoulders ing in notchesbl, and 62 in the latch mem- 9O knob13011 the outside'of the door. as shown F more particularly'in- .6. Thearms and 6 of thelatch member are recessedfrom the point of unionat'thel ifo'rward e'nd't'o. the 7 t s on 1' a s 21* a 2 "t e 6X4 adaptedfor engagement against the sh'oul dersf1 5 and116 of thelatch menibersre specti-vely as shown in Fig. 52. .A spring.

. -22 engaging against ithe shoulders '15 Land tion of the knob. Onmovement of the bar 17 from the position shownin Fig. 2 to that shown inFig. 3; the recessed or cut out portion of the locking bar 17 isbroughtto position adjacent this flat portion 2a of the hub 11 so thatin the position of parts shown in Fig. 3 the hub'may beturned and thelatch operated after the manner as indicated in Fig. 5. r 4 I Thelocking bar maybe forced to thls position shown in Fig. 3 or5 by theknob 26 on the inside of the door secured to the inner end of the shaft27 on which is secured a hub 11 of the outer door knob.

'28 is shown in Fig. 10 and has lugs 29 and hub 28 similar in allgeneral respects to the This hub 30 thereon for en a in the lu s 7 and 8of the latch member. The lug 29 of the hub 28, however, does not beardirectly against 1 the lug 7 of the latch member but against an arm 31of the pivoted pawl 32 on the inner face of the casing shown in detailin "Fig. 9. This pawl has 'apin 34.- which fits particularly in Fig. 8.

an aperture in the casing as will be understood and is provided with anarm 35 which engages against an enlarged portion 36' at the end of'thelocking bar 17 shown more lugor arm 29 engaging against the arm 31 ofthe pawl rotationof the knob 26 in one 7 direction to the right of Fig.10 turns the laterally of the case to unlocking'position 1' against thetension of its spring. Underv pawl on its axis" forcing the lockingbarshown in Fig.3 with the arms 21 and 22 of the locking bar out ofcontact-with the "shouldersr15 and 16 of the arms of the latch memberpermitting the latch to, be retracted .2 normal conditions the releaseof the knob member permits the latch member to again be projected by itsspring and the spring andis locked from operation fromthe eX To unlockthe device from the'eX-. terior I have preferably provided a key 4-0shown in'Fig. .11 having a semi-circular end 23 returns the locking barto its normal position shown in Fig. 2. [Thus with the arrangementdescribed, the latch may be operated freely from the interior ofthe doorterior.

41 terminating in two' .pin' like arms 42.

The case is provided with a semi-circular slot 43 permltting theintroduction of. the

key and the pawl 32 is provided with aper tures 44 for the pin ends 41-2of the keyso that rotation "of the key in one direction turns the pawland, by reason of the :engagement oi thearm with the enlarged poreitherside.

By reason of they tion36 of the locking bar and ofthe arm 31 with thelug 7 of the latch member, rotation of the-pawl releases the locking barand re- I tracts the'latch'memb'er. It is to be noted particularly fromFig. 2 that the shoulders '15 and 16 are formed at an angle to' thelateral axis of the lock case and rotation of the pawl 32 retracts thelatch member 2 at the same time moving the locking barv 17 downward theangular shoulders 15 and 16 of the latch 2 allowing downward move;

ment of the locking bar and arn is21 and 22 while the latch 2 is beingretracted.

The lock may be manufactured as de scribed above in which case it isonly possible to operate the latch .with the knob from the inner sideand with a key iron.

the outer side and the principal. features of theinvention are involvedijnzthis de scribed construction. It is, however, often,

times desirable to provide a latch which is operable only from one sideand at the other times to so set "the lockand mechanism that it may befreely operated from For'this purpose Ifhave. pro

vided what I have here termed-a retainer.

slidingly and swingingly supported between the lock case andtheescutcheon. This conslsts of a flat 'bar 50 which extends through aslot 51 in-the case and through the escutcheon as shown in Fig.12.

provided'in the bar 50 which is positioned in a slot'53 shown in dottedlines in the door between the lock case and the escutcheon permitting alongitudinal move; ment of the bar 50 vin the case. The bar 50 ispositioned below the angular'end" 59 of the locking bar 17 so that ondown ward movement of the bar 17 andan ular end the bar 50 is'eng'agedand swung on the it pin 52 is.

pivot pin 52 to the right of the position shown in Fig. 2 and againstthe' tension of s the spring 55 until the notch 56 in the locking barregisters with the bar 50 at which. time the spring 56 forces the bar 50into the notch 56, and" thus holds the locking bar'in unlocked positionshown in Fig. 3 in which position both the inner and the outer knob maybe used to actuate the latch and under,"

the conditions stated the locking bar will be held out of its lockingrelation with the latch member for an indefinite period.v The lockmember, however,'may be releasedlat I any time simply by retracting thebar 50 and pin52, the length'of the slot 5311mm the notch 54: in the bar50 registers with the notch 56 of the. locking bar releasingthelocking'bar to action by the spring 23' .which draws the same tolocking position shown in F ig. 2 under which condition the bar 17 is]never engaged by the bar 50 due to the fact that the notch 54 in thebar50; permits movement of the locking bar 17H without resulting in,engagement, of the parts: I i

actuated by the interior door knob, a looking bar holding the latchmember from movement, means for disengaging the looking bar from thelatch member by operation,

of the interior door knob, and means for holding the locking bar indisengaged position to allowoperation of the look by both door knobs. 2.In a door lock, an 1nter1or and an exterior door knob, a separate shaftfor each knob, a hub on each shaft, lugs on the said hubs, a latchmember engaged by the said lu'gs'and a locking bar normally holding thelatch from movement, and means whereby, upon rotation of the interiordoor knob and shaft, the locking bar is first disengagedfrom the latchmember and the latch member is then retracted.

V 3. In a door look, a member operableby an interior door knob, a memberoperable by anexter'ior door knob, a latch member operable by both doorknobs, a springactuated locking bar normally held in engagement with thelatchmember allowing operation of the'lock by the interior door knob andpreventing operation of the lock by the exterior door-knob, and meansfor re leasing and holding the locking bar from engagement with thelatch member to allow operation of the-'lock by the exterior door knob.

4. In a door look, a member operable by an interior door knob, a memberoperable by an exterior door knob, a'latch member the said arms engagedby the said members operable bythe. door knobs, a locking bar normallyholding the latch member from movement, a pawl engaging the locking barand rotatable by the interior door knob whereby the pawl is rotated todisengage the locking. bar from the latch member, and a catch adapted tohold the locking bar in disengaged position permitting operation of thelock by either knob. c

5. In a door look, a door knob, alatch member having two rearwardlyextending arms, lugs on the ends of the said arms, a memberengaging saidlugs rotatable by the door knob and adapted to retract the latch member,upon rotation of the door knob, shoulders on thesaid latch member, alooking bar normally'engaging thereagainst preventing movement of thelatch member, and

a pawl rotatable upon rotation of the door knob and adapted uponrotation thereof to disengage; the locking bar from the latch, memberthereby allowing the latch member to be retracted. r r

whereof, I sign this specifi- In testimony cation.

WELLINGTON Loue EEn having arms extending therefrom, lugs on r

